baber/WOPTO huggingface dataset:
Patent GB-1425222-A (GB)
Title: Battery charging system
IPC: H02J7/16
Filed: 1973-01-30
Abstract: 1425222 Automatic voltage control LUCASTVS Ltd 30 Jan 1973 [4 Feb 1972] 4670/73 Heading G3R A voltage regulated battery charging system of the type in which generator field winding current is controlled by transistors and a Zenor diode, includes a surge absorbing capacitor connected to the regulator. As shown, a vehicle battery 19 is charged by an alternator 11 having auxiliary diodes 15 supplying a regulator circuit including a potentiometer chain 27-33 connected through a charging rate selection switch 23 to a battery voltage sensing lead. At low battery voltages, current from diodes 15 energizes field winding 45 and flows through transistors 42, 44. As the battery voltage increases, Zener diode 36 breaks down so that transistor 38 turns on and transistors 42, 44 are blocked. An RC circuit 47, 48 provides positive feedback so that the circuit oscillates, and current flows in winding 45 with a mark-space ratio determined by the current in Zener diode 36 and the battery voltage is regulated. A capacitor 49 absorbs voltage surges caused by load connection or disconnection, and resistors 35, 51 and diode 34 turn transistor 38 fully on if the voltage sensing lead is disconnected or excessive voltage occurs. In a modification, Fig. 2 (not shown), the diode 34 and resistor 35 are replaced by a second Zener diode fulfilling the same function.
Patent GB-803424-A (GB)
Title: Improvements in or relating to locking devices for gas taps
Inventor: CUSHWAY LEONARD RICHARD
IPC: F16K35/14
Filed: 1955-02-16
Abstract: 803,424. Locking valves. NORTH THAMES GAS BOARD. May 11, 1956 [Feb. 16, 1955], No. 4685/55. Class 135. In a locking-device for a number of gas taps, each tap is prevented from being moved into an open position by a detent member such as 28, Fig. 2, and each detent member is mounted with limited lost-motion on a common control shaft 15, rotation of which in one direction moves all the detent members to a position in which the taps can be opened and rotation of which in the opposite direction returns to locking position the detent members of all the taps which have not been opened in the meantime and leaves the remaining detent members in a position in which their respective taps can be operated. The taps 10 are mounted beneath the gas supply rail or manifold 11 of a gas cooker and are of the kind in which axial movement of the tap spindle 12 is first necessary to free a projection (not shown) from a slot in a fixed part before the tap can be turned to the open position. The shaft 15 is mounted in bearings 16 on the manifold 11. Each detent member 28 is rotatably mounted on the shaft 15 between a pair of radial pins 25 and carries a transverse pin 26 normally urged against the pins 25 by gravity or by a light spring. The manifold 11 itself limits the movement of the detent members 28 beyond the dead centre position. A quadrant plate 27 secured to each spindle 12 engages each detent member 28 to prevent inward movement of the spindle. The shaft 15 is conveniently rotated by the movement of a gas torch 18 supported in a holster 17 by a projection 22 on a gas elbow connection 20 supplying the torch through a flexible pipe 21. When the torch is swung outwardly it is released from the projection 22 and supplied with gas. At the same time the detent members 28 are moved clear of the quadrant plates 27. On returning the torch to its original position, the detent member 28a of any tap still open rests on the peripheral edge of its quadrant 27a, the other detent members being returned to the blocking position. In a modification, in which only rotary movement of the tap spindles is necessary to open the taps, each detent member has a downwardly-directed nose adapted to engage a slot in a collar on the tap spindle when the tap is closed.
Patent GB-577460-A (GB)
Title: Improvements in and relating to radio compasses
IPC: G01S1/02
Filed: 1943-03-23
Abstract: 577,460. Directive wireless signalling. SJOSTRAND, H. E. March 23, 1943, No. 4701. Convention date, March 26, 1942. [Class 40 (v)] [Also in Groups XIX, XXXII and XXXVI] In a direction-finder of the kind in which a directive aerial is continuously rotated in synchronism with an electromagnet receiving signals from the aerial, the electromagnet has poles on each side of the axis of rotation and the armature of the electromagnet is asymmetric about the axis. The armature is connected to the indicating pointer through a spring or other coupling which damps the action of the armature on the pointer so that the influence of night effects, which vary the direction of the received waves, is reduced or avoided. In one form, Fig. 1, a three-pole magnet a, b, c rotates with shaft 1 and its armature 10 on spindle 11 is connected by a spiral spring 18 to a float 16 having fins 17 immersed in liquid and carrying the pointer 15. The spring 18 may be replaced by two spiral springs, the inner ends of which are connected to the armature and the pointer, and the outer ends to a common disc, Fig. 2 (not shown), this arrangement compensating for heat-expansion. The electromagnet may have only two poles, or four or more poles acting on a pair of permanent magnets mounted astatically, Fig. 3 (not shown), or on a horseshoe magnet, Fig. 4 (not shown). The float and damping liquid may be replaced by a magnetic damping device, or the springs may be replaced by a magnetic, pneumatic, or other yielding coupling means, Figs. 5 and 6 (not shown). Specification 475,027 is referred to.
Patent GB-452019-A (GB)
Title: Improvements in and connected with centrifugal pumps, fans and blowers
IPC: F04D29/04
Filed: 1935-02-14
Abstract: 452,019. Centrifugal fans and pumps. WATKINS & WATSON, Ltd., and DUCKER, F. E. M., 17, White Lion Street, Islington, London. Feb. 14, 1936, No. 4802. [Class 110 (i)] Straight or curved auxiliary blades f are provided on the back of a disc fan or pump b, which produce a centrifugal pressure not greater than that produced by the main blades and thus by preventing the building up of the delivery pressure at the back of the fan, reduce the resultant axial thrust and the shaft leakage. The auxiliary blades may be applied to the several stages of a multi-stage pump.
Patent GB-676955-A (GB)
Title: Improvements in work feeding mechanism for sewing machines
IPC: D05B27/22
Filed: 1951-02-28
Abstract: 676,955. Sewing-machines. UNION SPECIAL MACHINE CO. Feb. 28, 1951 [March 21, 1950], No. 4804/51. Class 112. [Also in Group XXVI] Feed, regulating.- An adjustable eccentric for producing the feed movement comprises inner and outer eccentric members 44, 43, one of these being non-rotatable on the shaft 25 while the other is resiliently pressed away from it axially against retaining means so that this other is frictionally connected to the first for normal operation, while permitting relative movement for adjustment; a detent is provided to hold the adjustable member so that adjustment can be effected by rotating the shaft and the first member. In the form shown the outer member 43 (on which the eccentric strap bears) has a flange 53 to locate it axially in a member 48 fixed to a disc 49 secured on the shaft, and is held against rotation on the shaft by a pin 56 on the disc 49 engaging a notch in a part-cylindrical extension 57 of the flange 53; the end of the inner member 44 is pressed against the disc 49 by a spring 46, a friction member 52 being interposed. A lug on the member 44 engages between the cut-away ends of the part 57 to limit the relative movement between the members 43, 44. A notch 58 is provided in the member 44 to receive a detent secured to a spring-biassed rock-shaft which is actuated by a push-rod extending outside the machine frame to lock this member when it is required to adjust the eccentric. The position of adjustment is indicated by markings on the member 48 or another member on the shaft 25, a window being provided in the machine bed at the appropriate place, or by markings on the handwheel of the machine. Feed-dogs.-The dog is horizontally adjustable on an angle member which is secured to the feed-bar by means providing for vertical adjustment. Lubricating.-Gears connecting the upper and lower shafts dip into oil in a sump at the base of the standard and create a mist of oil inside the frame. A plate arranged to catch some of this oil feeds it into an axial bore in the shaft 25, whence it passes through radial passages 85, 87, 88 to circumferential channels in the surfaces of the members 43, 44.
Patent GB-1132643-A (GB)
Title: Improvements relating to conveyors
Inventor: BUCKLE RICHARD PERCY STANLEY
IPC: B65G47/00
Filed: 1966-02-03
Abstract: 1,132,643. Endless conveyers. SOVEX Ltd. 31 Jan., 1967 [3 Feb., 1966], No. 4810/66. Heading B8A. In a conveyer in which containers 1 are detachably mounted on carrier trays 2 supported by endless chains (not shown), provision is made for the containers 1 to be latched or locked to the respective trays 2 and to be automatically released only on reaching the destination for which selection means (not shown) has been set. The containers are reversible and have a loop 8 at either end, which is adapted to engage in an aperture 16 at the back of the tray. A spring loaded latch bar 9<SP>1</SP> then automatically engages the interior surface of the loop 8 and prevents the container from being drawn outwardly from the tray. Upward movement of the container is prevented by a flange 18 above the aperture 16. When the tray 2 is caused or permitted (by the preset destination mechanism) to tilt forwardly, the latch 9<SP>1</SP> is drawn downwardly from its position within the loop 8, to a position (dot-dash lines) which permits release of the container. The latch 9<SP>1</SP> is carried by a bar 9. The latter is pivotally connected to a link 13 itself pivoted at 15 to the tray. The bar 9 also has followers 11 which engage an inclined rail 12. The latter is positioned as so to permit the bar 9 to drop as the tray tilts. In a modification (Fig. 3), the latch 9 is replaced by a member 19 which is biased by a weight 30 about a pivot 22 to the position shown, in which the weight 30 engages the edge of a link 23. In this position, the member 19 engages the parts 20 or 21 of a channel-shaped frame member of the tray, to prevent withdrawal, outwardly or upwardly of the container. The link 23 is connected by linkage 27 to a part (29) (Fig. 2, not shown) of the tray, in such a way that when the tray is tilted the link 23 is turned anticlockwise to withdraw the member 19 from the channel-shaped member. In a modification of the latter arrangement (Figs. 4 and 5, not shown), the link 23 is connected by a link (34) to a similar link (2311) carrying its respective latch member (19<SP>11</SP>). Lockable selectively operable destination means as described in Specification 1,021,746 may be used. Destination selection projections 3 and 4 may be positioned on opposite respective sides of the container. The projections 3 may differ in position from the projections 4. The projections 3 may be in the same position for all containers (e.g. corresponding to the routing back of the containers to a post room or other common destination) while the projections 4 may be in different positions for all the respective containers.
Patent GB-1111878-A (GB)
Title: Mill mixer and spreader
IPC: A01C3/06
Filed: 1967-02-01
Abstract: 1,111,878. Manure spreaders. G. C. WOOD. 1 Feb., 1967 [17 Feb., 1966], No. 4878/67. Heading A1D. A material spreader comprises a horizontally elongated housing 12 forming a pair of semi-cylindrical chambers in communication with each other at the centre of the housing, a rotary beater unit provided in each chamber, a set of projectable and retractable hoods 19, 20 provided on the chamber 11 whereby material treated by the beater unit in that chamber may be guided and discharged longitudinally over and beyond the other chamber while the beater in that chamber is inoperative and a set of projectable and retractable hoods 21, 22, 23 provided on the other chamber whereby material treated by the beater unit in that chamber may be excluded from the first chamber 11 and discharged from the other chamber in the same direction as from the chamber 11.
Patent GB-163142-A (GB)
Title: Improvement in tobacco-pipe plugs
IPC: A24F5/08
Filed: 1920-02-23
Abstract: 163,142. Colley, H. H. C. Feb. 23, 1920. Tobacco pipes. - A concave perforated metal' bowl plug with downwardly projecting arms A and slits B in the edge is formed from a metal blank as shown in Fig. 1. '
Patent GB-1499875-A (GB)
Title: Fluid delivery apparatus
IPC: A61M5/00
Filed: 1974-02-06
Abstract: 1499875 Sensing liquid drops photoelectrically F H TOWNSEND 6 Feb 1975 [6 Feb 1974] 5379/74 Heading G1A [Also in Division G3] Apparatus for delivering discrete quantities of a liquid at a controlled rate to a patient comprises: a drip chamber 21 attached to a bottle containing a solution 20 by way of a drip-giving set 19; a drop detector 22 operable to produce a signal in response to a falling drop in the chamber; a peristaltic pump 24 driven by a stepping motor for delivering the liquid to a patient; and control logic for the stepping motor operable in response to signals from a phototransistor of the drop detector. The pump is operated intermittently and is stopped when passage of a drop is detected in a first time period and an alarm is actuated and operation of the pump is prevented if no drop is detected in the first time period. The motor control logic energizes the three inputs of AND-gate 16. One input is a constant pulse rate from oscillator 4, a second is from the control bi-stable switch 5 and the third from the alarm bi-stable 6. Pulses from the clock generator are selected manually to occur at between one and sixty pulses per minute, which pulses set a monostable 7 having a reset period of 0À9 seconds. The monostable output sets the bi-stable 5. Pulses from the photosensor drop detector each set a monostable 9 having a reset period of 0À04 seconds, from which monostable 9 the output pulse resets the control bi-stable 5 thereby stopping the stepping motor via connection 10. Lamp 11 is energized from monostable 9 to give an indication of the drip rate. If no drop falls through the drip chamber despite operation of the motor in the time set by monostable 7, or if a drip appears outside the maximum time of 0À9 seconds set by the monostable 7, the two inputs 12 to AND gate 13 are identical so a pulse passes via OR gate 14 to set the alarm bistable 6. The Q output from the alarm bi-stable is therefore zero so the motor drive gate 16 is disabled and the pump is stopped. The Q output from the alarm bi-stable 6 drives various alarm devices. Alternatively, if two drops are delivered within the period determined by the interval between two consecutive pulses from the clock generator, the arrival of a second pulse from the drop detector provides identical inputs 17 to the AND gate 18 whereby an alarm is actuated and the pump is stopped as before. In an alternative logic circuit arrangement Fig. 4 (not shown) two drops are allowed to be delivered within a first clock time period and then no drop is allowed to be delivered in the next clock time period and the arrangement is reset at the commencement of a third clock time period.
Patent GB-104575-A (GB)
Title: Anti-flickering Device for use in connection with Cinematography.
Inventor: DRYSDALE JOHN
IPC: G03B9/10
Filed: 1916-04-12
Abstract: 104,575. Drysdale, J. April 12, 1916. Kinematograph apparatus.-A device for use by a spectator at a kinematograph display to prevent flicker comprises a frame A having an opening B provided with cross-pieces D or a number of slots or openings. The device is to be moved in front of the face so as to interrupt vision, and may consist of cardboard, sheet metal, &c., and be fan-shaped, as shown. The total width of the opening or openings is at least equal to the width between the eyes of the observer.
Patent GB-684295-A (GB)
Title: Improvements in or relating to organosilicon compounds
IPC: C07F7/08
Filed: 1951-03-06
Abstract: Aqueous emulsions with organo-silicon liquids such as dimethylpolysiloxane are formed, using as the emulsifying agents organo-silicon compounds of the formula R(CH3)2Si(CH2)nNH2, wherein R represents the methyl or phenyl radical and n is an integer from 2 to 5 inclusive.ALSO:The invention comprises organo-silicon compounds of the formula R(CH3)2Si(CH2)nNH2, wherein R represents the methyl or pheny-radical and n is 2 to 5 inclusive, and mixtures thereof, and salts thereof.  The compounds may be prepared by the molecular dehydration of the amides R(CH3)2Si(CH2)mCONH2, where m is from 2 to 4 inclusive and R has the above significance, to form the nitrile R(CH3)2Si (CH2)mCN which are then reduced to the required organo-silicon compounds, e.g. with lithium aluminium hydride.  An alternative method of preparation employs the Hofmann synthesis, i.e. amides of the general formula R(CH3)2Si(CH2)nCONH2, where R has th above significance and n is from 2 to 5 inclusive, are reacted with sodium methylate and bromine in methanol solution to form the corresponding methane which is then hydrolysed.  In the examples: (1) beta-trimethylsilylethylamine and its hydrochloride are prepared by the Hofmann synthesis and N-(beta-trimethylsilylethyl) methyl carbamate is the intermediate urethane; (2) beta-phenyldimethylsilylethylamine and its hydrochloride is prepared by the method of (1); (3) gamma-trimethylsilylpropylamine and its hydrochloride is prepared as in (1); (4) gamma-trimethylsilylpropylamine by dehydrating beta - trimethylsilylpropionamide with phosphorus pentoxide to form beta-trimethylsilylpropionitrile which is then reduced with lithium aluminium hydride and the amine metallate thus formed is hydrolysed with aqueous sodium potassium tartrate. Specifications 684,268, 684,293 and 684,294 are referred to.
Patent GB-367179-A (GB)
Title: Improvements in or relating to ice-making
IPC: A23G9/12
Filed: 1931-02-20
Abstract: 367,179. Ice-cream and like freezers. BINGHAM, F. H., 59, New Oxford Street, London. Feb. 20, 1931, No. 5442. [Class 29.] Apparatus for making small ice cubes comprises a metal cage 8, Figs. 1 and 2, adapted to fill the annular water space between a vessel 3 and the depending portion 41 of the lid of the vessel. These parts are placed in an airjacketed vessel 1 containing freezing-mixture which also fills the lid of'the vessel 3. Rotary stirrers 5<1>, 7 are provided for agitating the freezing-mixture. On completion of the freezing, the cage is withdrawn from the vessel 3 and the ice cubes are pressed from the cells of the cage.
Patent GB-1244945-A (GB)
Title: Method and apparatus for the continuous process cooking of homogenized dietetic products
IPC: A23L3/18
Filed: 1970-02-04
Abstract: 1,244,945. Homogenizing foodstuffs. GIO & F. LLI BUITONI SANSEPOLCRO S.p.A. 4 Feb., 1970 [4 Feb., 1969], No. 5451/70. Heading B1C. A continuous cooking device 9 for homogenized foodstuffs comprises two heated and temperature regulatable hollow cylindrical jackets 10, 12 the opposed walls of which provide an annular cooking zone 11. A rotatable cage 14 carries resilient scrapers 18 for both walls of the cooking zone, and stirrers 19 rotatable also on their own axes by peeling (see Fig. 2, not shown). The foodstuff is preferably introduced at the bottom of the cooking zone and withdrawn at the top; the jackets 10, 12 are supported on a jack (8, Fig. 1 not shown) so that they can be dropped away from the cage for maintenance or cleaning. The heating circuit (see Fig. 6, not shown) is controlled so that interruption of the flow of foodstuff reduces the temperature of the walls to prevent over-cooking. (For Figures see next column)
Patent GB-490693-A (GB)
Title: Improvements in and relating to the manufacture and production of artificial filaments, threads, bands and the like
IPC: D01D1/06
Filed: 1937-02-23
Abstract: <PICT:0490693/IV/1> In the production of artificial threads wherein a solution is passed by means of a pump through a filter, such as a candle filter, and then through a nozzle, the pressure in the solution-supply system on the inlet side of the filter is released immediately or shortly before removing the nozzle for cleaning or other purpose.  Impurities and other material normally retained by the filter tend to be forced through the filtering medium when the nozzle is removed, but this difficulty is avoided by first releasing the pressure on the inlet side.  The release of pressure may be effected by opening a tap which normally closes one branch of a T - piece inserted in the pipe between the pump and the candle filter. As shown, viscose passes from pump 1 along the pipe 2 to the interior of filter candle 3 housed in the case 4. The solution passes through the filter and thence through outlet 7 to the nozzle.  When it is desired to remove the nozzle for changing or cleaning it the tap 6 is opened immediately before removing the nozzle, and if desired the pump is stopped also.  The process may be carried out when using spinning solutions containing a solid such as a pigment in suspension.  The filter normally holds up a small proportion of the suspension and if this were allowed to pass through when the nozzle is changed, the thread subsequently spun would contain an abnormally large proportion of suspended matter.  This defect is avoided by first releasing the pressure on the inlet side of the filter. Specification 395,333 is referred to.
Patent GB-297283-A (GB)
Title: Improvements in or relating to crushing machines
IPC: C13B10/06
Filed: 1928-02-22
Abstract: 297,283. Cooper, D. B. Feb. 22, 1928. Capillary-action lubricating. - The upper bearing bush 16 for the roller shafts of crushing machines has an oil-absorbent washer 18 communicating with a lubricant reservoir 20, lubricant being distributed over the bush by a helical groove 21a.
Patent GB-632209-A (GB)
Title: An improved cutting device for cheese and the like
IPC: B26D1/547
Filed: 1947-02-27
Abstract: 632,209. Cheese cutters. GIBSON, Ltd., A. B., and WARD, E. G. Feb. 27, 1947, No. 5641. [Class 87 (ii)] Relates to the type of cutter having a slotted cutting board 2 and a length of spring steel wire 8 passing through the slot, the wire being provided at one end with a hand grip 9 and being mounted at the other end on a runner 7 movable along a guide 6 disposed below the slot. According to the invention the runner, with the wire attached, is removable from the guide through an enlarged part 5 of the slot. The part 5 is normally closed by a plug 17 which acts as a stop for the runner. The plug is forked to straddle the guide 6, which is in the form of a T-bar. The runner has rollers or wheels 16 that engage the underside of the bar 6. The board 2 may be of aluminium, wood or plastic material.